<p>➀ The QSolid project, led by Forschungszentrum Jülich and Fraunhofer IZM-ASSID, aims to develop a German quantum computer with superconducting quantum chips and reduced error rates, utilizing an interposer to optimize qubit-electronics connections;</p><p>➁ A mid-term prototype with 10 qubits and integrated software was launched in 2025, with plans to scale performance by 2026 through advanced processor designs;</p><p>➂ The interposer supports over 10,000 high-density connections, thermal decoupling of components, and ongoing scalability tests, backed by €76.3 million in government funding to strengthen Germany’s quantum research sovereignty.</p>